Nozzle and method of making the same



Sept. 13, 1938. J 1.. BARNES NOZZLE AND METHOD OF MAKING THE SAME Filed April 12, 1937 Patented Sept. 13, 1938 PATENT OFFICE NOZZLE AND METHOD OF MAKING THE- I SAME Joe L. Barnes, Des Moines, Iowa, assignor to L. R. MacKenzie. Incorporated, Des Moines, Iowa. a corporation of Delaware Application April 12, 1937, Serial No. 136,394

3 Claims.

The object of my invention is to' provide a nozzle and a method of making the same.

More particularly, it is my object to provide a nozzle of very simple and inexpensive construction, which is especially adapted for handling various liquids including, for example, asphalt emulsion, which is exceptionally hard to dispense in the form of a spray.

In attempting to produce a fine spray of various liquids, considerable difficulty has been encountered in an attempt to find a satisfactory discharge nozzle. In the case of many liquids, a spray nozzle of the ordinary garden hose type, which uses a ball, soon clogs up. Where a nozzle is employed with a round hole or a series'of round holes, I-find. that when the holes are fine enough to produce a fine spray, they soon clog up and 7 if the holes are made large .enough to avoid clog,- ging, it is impossible to get a fine spray.

I have discovered, that by the particular structure of nozzle herein explained, I can use the nozzle for handling many liquids, including asphalt emulsion and can produce a very fine spray with no difflculty on account of clogging.

I also find that with a nozzle of the kind herein explained, the pressure can be varied for determining the spread of the spray.

I also find that by a very simple modification in the nozzle, it can be varied for handling different quantities of liquid per minute.

It is therefore my object to provide a nozzle of a construction which will not clog up and which will afford a fine spray of various materials.

A further object is to provide a simpleemethod for making'such a nozzle. E

With these and, other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my nozzle and in the'method of making the same, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation of a nozzle embodying my invention installed in connection with a supply tube and control valve.

Figure 2 is a top or plan view of the nozzle with an illustration of the spray formed thereby.

Figure 3 is a similar view showing liquid flowing from the nozzle under light pressure and at the beginning of the formation of the spray at right angles to the slot.

Figure 4.is a perspective view of the nozzle.

Figure 5 is a detailed, sectional view on the line 5-'5 of Figure 1.

shown.

Figure 6 is a detailed, sectional view taken on the line 6-6 of Figure 5; and

Figure 7 is a perspective view of the nozzle after one stage in the manufacture.-

After experiments with various liquids with 5 many kinds of nozzles, all of which were unsatis factory, because of the difliculty in getting a nozzle which would afford a fine spray, and yet would not clog, I designed the nozzle herein The method by which the nozzle is made is very simple.

A piece of tubing or the like indicated by the reference numeral HI has one end placed in a die and flattened, to bring the two edges tightly 15 together along the line H. They may be pressed together tightly enough, so that they are practically leak-tight.

They are also pressed together for a short distance from the extreme end as indicated at II in 20 Figure 5. Ordinarily I'press them together for about one-eighth of an inch.

The form of the article at this stage of its manufacture is illustrated'in Figure 7.

The corners may then be ground off to make 25 a more presentable product.

To form the nozzle opening, I grind or file of! the central part of the compressed edges of the nozzle to form the curved notches I 3, shown in Figure 4. This leaves a slot M, such as is shown 30 in Figure 4, which is .curved from its center upwardly and outwardly to its end.

The opposite endof the tube is preferably threaded as at IE to fit into the internal threaded fitting l6 on a suitable valve II. The valve I1 35 may be connected with a supplypipe I8 and may be controlled by a handle l9.

Assuming that the liquid used with the nozzle is supplied through the tube l8 under pressure, and the valve is slightly opened, it will be ob- 40 served that the fluid 20 starts to flow from the nozzle opening slot l4 and as the pressure is increased, the fiuid begins to extend into a fan shape at right angles to the length of the slot ll as illustrated in Figure 3.

The fluid apparently flows through the tube l0 toward the nozzle opening. Some of the fluid passes into the wider part of the tube at the nozzle end. As indicated by the arrows in Figure 6, some of the fluid probably passes out 50 through the central part of the slot, but the fluid so emerges from the slot as to form the tanshaped spray at right angles to the length of the slot.

I have found that in a nozzle of the shape 55 here shown, I can provide a slot 0! suloient sine that it will not clog up when viscuom liquids, for example, are used, and yet the liquid will discharge iron the nozzle in a very ilne spray. The fineness oi the spray can be regulated by the pressure supplied and by the degree to which the valve is opened.

For supplying different amounts 0! liquid, I use various sizes 0! nozzles, and by varying the size o i' the slot II, the discharge capacity can be regulated.

The length of the slot I4 is always less than the length of the closed ends oi the nozzle. so that there is' a closed portion as indicated at I! at the end of the nozzle and at each end of the slot II.

I claim as my invention:

1. A method of forming a hassle for use in spraying various liquids, comprising the steps oi flattening the end of a tube to bring the edges snugly together, and then forming rounded notches in the adjacent closed edges. for thus forming an open slot of less length than the transverse length oi! the closed end of the tube.

2. A'nonle having atubularbodybttsnedat one end to bring its edges tightly together. oitheadiacentedgeshavingacurvednotchthe notches being of similar shape, whereby formed a slot terminating at its ends short of the extreme ends of the closed edges of the tube.

3. In a nozzle for iorming. a Ian-shaped spray. a tubular body having one end pressed and ilattened to bring the two edges tightly together for ashortdistanoelensthwiseoithetuhaeacho! theadiacentedgeshavingacurvednotch. the notches being of similar shape and o! a depth extending from the free end oi the nozzle beyond the flattened portions, whereby there is formed a slot in the end of the tube terminating at its ends short of the extreme ends 0! the closed edges of the tube, said nozzle being such that by varying the depths oi the notches. the sine oi the slot may be varied for varying the capacity of the nozzle.

- JOI L. m. 

